Thiomalic acid, 99%

Name: Thiomalic acid, 99%
Brand: Vaqora Chemicals
SKU: VQ-010991

About Thiomalic acid, 99%

Listed under CAS 70-49-5, Thiomalic acid is an organosulfur compound available from Vaqora Chemicals, specified at 99% purity. With the molecular formula C4H6O4S, it has a molar mass of 150.16 g/mol. The IUPAC name is 2-sulfanylbutanedioic acid. Alternative names: Mercaptosuccinic acid and 2-Mercaptosuccinic acid.

The material typically appears as a white to beige powder. Key physical data: a melting point of 149-155 °C. Store in a tightly closed container in a cool, dry and well-ventilated place. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

Key uses span organic synthesis and API synthesis. It is used across pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 100 g, 500 g, 1 kg and 25 kg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Organic synthesis
API synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	Thiomalic acid, 99%
Catalogue No.	VQ-010991
CAS Number	70-49-5
IUPAC name	2-sulfanylbutanedioic acid
Molecular formula	C₄H₆O₄S
Molecular weight	150.16 g/mol
Exact mass	149.9987
Purity / assay	99%
HSN code	29309099
InChIKey	NJRXVEJTAYWCQJ-UHFFFAOYSA-N
SMILES	C(C(C(=O)O)S)C(=O)O
PubChem CID	6268

Physical properties
Physical form	Powder
Appearance	White to beige powder
Melting point	149-155 °C
LogP (XLogP3)	-0.4
H-bond donors / acceptors	3 / 5
TPSA	75.6 Å²
Synonyms	Mercaptosuccinic acid, 2-Mercaptosuccinic acid, 2-Thiomalic acid, Monomercaptosuccinic acid, Mercaptosuccinate, (+-)-mercaptosuccinic acid, Butanedioic acid, mercapto-, DL-Mercaptosuccinic acid, Malic acid, 2-thio-, butanedioic acid, 2-mercapto-, USAF M-2, .alpha.-Mercaptosuccinic acid

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed
H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P270, P271, P272, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P330, P332 + P317, P333 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Thiomalic acid, 99%?

The CAS Registry Number of Thiomalic acid, 99% is 70-49-5. It is also known as Mercaptosuccinic acid, 2-Mercaptosuccinic acid, 2-Thiomalic acid.

What is the molecular formula and molecular weight of Thiomalic acid, 99%?

Thiomalic acid, 99% has the molecular formula C4H6O4S and a molecular weight of 150.16 g/mol. Its IUPAC name is 2-sulfanylbutanedioic acid.

Which grade and pack sizes of Thiomalic acid, 99% can I order?

We supply Thiomalic acid, 99% in (99%) grade, in 100 g, 500 g, 1 kg, 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Thiomalic acid, 99%?

Yes. Every lot of Thiomalic acid, 99% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Thiomalic acid, 99% be shipped internationally?

Yes. Thiomalic acid, 99% is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.